BUG: fixed wrong order of ordered labels in pd.cut() #16466
Conversation
|
@jreback happy to do that, can you tell me how/where to add the what's new, and what you're looking for in terms of the original test? all i know is it passes. |
|
doc/source/whatsnew/v0.20.2.txt you copy the test from the original issue and assert that it is correct now (you construct the expected) and compare vs running |
|
Ok, the what's new is straightforward, in terms of the test, do you just want me to include the output in the original issue? or an actual test in |
Codecov Report
@@ Coverage Diff @@
## master #16466 +/- ##
=======================================
Coverage 90.42% 90.42%
=======================================
Files 161 161
Lines 51027 51027
=======================================
Hits 46142 46142
Misses 4885 4885
Continue to review full report at Codecov.
|
Codecov Report
@@ Coverage Diff @@
## master #16466 +/- ##
==========================================
+ Coverage 90.75% 90.79% +0.04%
==========================================
Files 161 161
Lines 51073 51063 -10
==========================================
+ Hits 46350 46365 +15
+ Misses 4723 4698 -25
Continue to review full report at Codecov.
|
that's exactly the point. the test should succeed now! and failed before the fix. |
|
Pre-fix: Post-fix: |
|
@economy so make a test out of that. |
|
Gotcha, sorry for the confusion. |
doc/source/whatsnew/v0.20.2.txt
Outdated
| @@ -37,6 +37,7 @@ Bug Fixes | |||
| ~~~~~~~~~ | |||
|
|
|||
| - Bug in using ``pathlib.Path`` or ``py.path.local`` objects with io functions (:issue:`16291`) | |||
| - Bug in ``pd.cut`` when ``labels`` are set (:issue:`16459`) | |||
There was a problem hiding this comment.
Bug in pd.cut does not preserve label ordering when labels are passed
pandas/tests/reshape/test_tile.py
Outdated
| @@ -211,12 +211,18 @@ def test_cut_pass_labels(self): | |||
|
|
|||
| result = cut(arr, bins, labels=labels) | |||
| exp = Categorical(['Medium'] + 4 * ['Small'] + ['Medium', 'Large'], | |||
| categories=labels, | |||
There was a problem hiding this comment.
this causes a lint error (needs an indent)
|
@jreback finally had a chance to get to this. should be green now |
|
@economy looks like a conflict in the whatsnew file. Can you rebase? |
TomAugspurger
added
Blocker
doc/source/whatsnew/v0.20.2.txt
Outdated
| - Fixed a compatibility issue with IPython 6.0's tab completion showing deprecation warnings on Categoricals (:issue:`16409`) | ||
|
|
||
| - Bug in ``pd.cut`` when ``labels`` are set (:issue:`16459`) |
There was a problem hiding this comment.
maybe add incorrect ordering resulted
pandas/tests/reshape/test_tile.py
Outdated
| @@ -219,6 +220,12 @@ def test_cut_pass_labels(self): | |||
| exp = Categorical.from_codes([1] + 4 * [0] + [1, 2], labels) | |||
| tm.assert_categorical_equal(result, exp) | |||
|
|
|||
| labels = ['Good', 'Medium', 'Bad'] | |||
|
thanks! |
closes pandas-dev#16459 Author: economy <[email protected]> This patch had conflicts when merged, resolved by Committer: Jeff Reback <[email protected]> Closes pandas-dev#16466 from economy/fix_cut and squashes the following commits: 29128b3 [economy] comments and whatsnew edits 3898b72 [economy] BUG: fixed wrong order of ordered labels in pd.cut() (cherry picked from commit d419be4)
closes #16459 Author: economy <[email protected]> This patch had conflicts when merged, resolved by Committer: Jeff Reback <[email protected]> Closes #16466 from economy/fix_cut and squashes the following commits: 29128b3 [economy] comments and whatsnew edits 3898b72 [economy] BUG: fixed wrong order of ordered labels in pd.cut() (cherry picked from commit d419be4)
closes pandas-dev#16459 Author: economy <[email protected]> This patch had conflicts when merged, resolved by Committer: Jeff Reback <[email protected]> Closes pandas-dev#16466 from economy/fix_cut and squashes the following commits: 29128b3 [economy] comments and whatsnew edits 3898b72 [economy] BUG: fixed wrong order of ordered labels in pd.cut()
closes pandas-dev#16459 Author: economy <[email protected]> This patch had conflicts when merged, resolved by Committer: Jeff Reback <[email protected]> Closes pandas-dev#16466 from economy/fix_cut and squashes the following commits: 29128b3 [economy] comments and whatsnew edits 3898b72 [economy] BUG: fixed wrong order of ordered labels in pd.cut()
git diff upstream/master --name-only -- '*.py' | flake8 --diffChanges to how
cutinstantiatesCategoricalwhen a list of labels are passed to it, and thetest_cut_pass_labelstest for it. If labels are passed in as aCategoricalalready, behavior isn't altered at all, but if the user specifies a list of labels, the rank ordering of those labels is preserved incut.